diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-08-31 20:02:36 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-09-01 16:49:26 -0600 |
| commit | e5c7fb400227df5c7822a3c59b193d23e849d0ac (patch) | |
| tree | bdc58dbaeef65b983e9e8fe58c0d5c59977f3dbc /fs/block_dev.c | |
| parent | 46d40cfad13ccbd0739019d754d46d8f93e1d5aa (diff) | |
block: move the devcgroup_inode_permission call to blkdev_get
devcgroup_inode_permission is never called for the recusive case, so
move it out into blkdev_get.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 36 |
1 files changed, 17 insertions, 19 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 08158bb2e76c..990e97bcbeaf 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1449,22 +1449,8 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder, struct gendisk *disk; int ret; int partno; - int perm = 0; bool first_open = false, unblock_events = true, need_restart; - if (mode & FMODE_READ) - perm |= MAY_READ; - if (mode & FMODE_WRITE) - perm |= MAY_WRITE; - /* - * hooks: /n/, see "layering violations". - */ - if (!for_part) { - ret = devcgroup_inode_permission(bdev->bd_inode, perm); - if (ret != 0) - return ret; - } - restart: need_restart = false; ret = -ENXIO; @@ -1637,12 +1623,24 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, void *holder, */ int blkdev_get(struct block_device *bdev, fmode_t mode, void *holder) { - int res; + int ret, perm = 0; - res =__blkdev_get(bdev, mode, holder, 0); - if (res) - bdput(bdev); - return res; + if (mode & FMODE_READ) + perm |= MAY_READ; + if (mode & FMODE_WRITE) + perm |= MAY_WRITE; + ret = devcgroup_inode_permission(bdev->bd_inode, perm); + if (ret) + goto bdput; + + ret =__blkdev_get(bdev, mode, holder, 0); + if (ret) + goto bdput; + return 0; + +bdput: + bdput(bdev); + return ret; } EXPORT_SYMBOL(blkdev_get); |